JPH02173212A - Sliding material and surface treatment method thereof - Google Patents
Sliding material and surface treatment method thereofInfo
- Publication number
- JPH02173212A JPH02173212A JP32585988A JP32585988A JPH02173212A JP H02173212 A JPH02173212 A JP H02173212A JP 32585988 A JP32585988 A JP 32585988A JP 32585988 A JP32585988 A JP 32585988A JP H02173212 A JPH02173212 A JP H02173212A
- Authority
- JP
- Japan
- Prior art keywords
- sliding
- sliding surface
- hardened
- hardening
- surface treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000004381 surface treatment Methods 0.000 title claims description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 238000000576 coating method Methods 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000010791 quenching Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 10
- 230000000171 quenching effect Effects 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 description 15
- 239000002184 metal Substances 0.000 description 15
- 239000007789 gas Substances 0.000 description 13
- 238000009792 diffusion process Methods 0.000 description 12
- 238000005422 blasting Methods 0.000 description 10
- 230000001681 protective effect Effects 0.000 description 10
- 230000002265 prevention Effects 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 238000007747 plating Methods 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 7
- 239000011295 pitch Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 238000005255 carburizing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 239000002173 cutting fluid Substances 0.000 description 4
- -1 nitride compound Chemical class 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 238000005121 nitriding Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、表面焼入れ硬化処理が施された鉄系合金の摺
動材及びその表面処理方法に係り、特に潤滑条件下で使
用される自動車エンジン、油圧機器、空調機器及び圧縮
機器などの摺動面の耐摩耗性を向上するに好適な摺動材
及びその表面処理方法に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a sliding material made of iron-based alloy subjected to surface quench hardening treatment and a surface treatment method for the same, and particularly for automobiles used under lubricated conditions. The present invention relates to a sliding material suitable for improving the wear resistance of sliding surfaces of engines, hydraulic equipment, air conditioning equipment, compression equipment, etc., and a surface treatment method thereof.
摺動材の表面処理方法の従来技術としては、特開昭６０
−３４３１号公報及び特開昭６２−７７４２１号公報に
それぞれ記載された提案が公知である。前者はロータリ
ピストンエンジンのロータハウジングの内面の摺動面に
硬質メツキ被膜を形成した後、この摺動面をフォトエツ
チング処理により凹部を刻設して油溜りを形成したもの
である。また後者は鉄系合金製軸部材を高密度エネルギ
の照射により、ら旋状かつ断続的に再溶融チル化処理を
施して耐摩耗性や酎がじり性を向上させたものである。As a conventional technique for the surface treatment method of sliding materials, there is
The proposals described in Japanese Patent Laid-open No. 3431 and Japanese Patent Application Laid-Open No. 62-77421 are known. The former method involves forming a hard plating film on the sliding surface of the inner surface of the rotor housing of a rotary piston engine, and then photo-etching the sliding surface to form recesses to form oil reservoirs. In the latter case, a shaft member made of an iron-based alloy is subjected to a spiral and intermittent re-melting and chilling treatment by irradiation with high-density energy to improve wear resistance and hardness.
〔発明が解決しようとする課題〕
上記公報によって開示された従来技術のうち、前者は摺
動面を硬質メツキするため、摩擦に耐えるためのメツキ
膜厚を得るためには長時間のメツキ処理が必要である。[Problems to be Solved by the Invention] Among the conventional techniques disclosed in the above-mentioned publications, the former involves hard plating of the sliding surface, which requires a long plating process in order to obtain a plating film thickness that can withstand friction. is necessary.
しかも−皮形成した硬質メツキ皮膜を再度フォトエツチ
ングにより凹部を刻設する必要があるため、硬質メツキ
部の膜厚はさらに厚くしなければならない。この結果処
理時間が極めて長くなり、かつ処理コストが高くなるた
め、高級な摺動材にしか適用できないという問題があっ
た。Moreover, since it is necessary to again photoetch the formed hard plating film to form recesses, the film thickness of the hard plating part must be made even thicker. As a result, the processing time becomes extremely long and the processing cost becomes high, so there is a problem that it can only be applied to high-grade sliding materials.
一方、後者は鉄系合金製軸部材を高密度エネルギの照射
によりら旋状の再溶融処理して、これを凝固チル化処理
するためには、摺動面を再溶融する必要がある。しかし
鉄系合金製軸部材表面を再溶融すると、軸部材表面は不
規則な凹凸状となり摺動面としては使用できない。従っ
てこの提案による場合は表面処理後表面を再度機械加工
しなければならない。またこの提案は硬化チル層の硬度
増大による耐久性の向上を目的としているが、摺動面の
硬度差を利用して硬質部分を凸状とし、軟質部分を凹状
とするとともに、この凹部を潤滑油の油溜りとして利用
することは開示されていない。On the other hand, in the latter case, it is necessary to re-melt the iron-based alloy shaft member into a spiral shape by irradiating it with high-density energy, and then re-melt the sliding surface in order to solidify and chill it. However, when the surface of the iron-based alloy shaft member is remelted, the surface of the shaft member becomes irregularly uneven and cannot be used as a sliding surface. Therefore, according to this proposal, the surface must be machined again after surface treatment. In addition, this proposal aims to improve durability by increasing the hardness of the hardened chill layer, but by making use of the difference in hardness of the sliding surface, the hard part is made convex and the soft part is concave, and this concave part is lubricated. Utilization as an oil sump is not disclosed.
本発明は上記事情に鑑みてなされたものであり、摺動材
の耐摩耗性を確実に向上することのできる簡単で安価な
摺動材の表面処理方法を提供することを目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a simple and inexpensive surface treatment method for a sliding material that can reliably improve the wear resistance of the sliding material.
本発明は上記目的を達成するために、鉄系合金からなる
部材の摺動面の少なくとも一部に、硬質の凸部と硬質の
凹部とからなる凹凸部を形成したことを特徴としている
。またこのような凹凸部を形成するために、少なくとも
摺動面が金属合金からなる摺動材の表面処理方法におい
て、該摺動材の摺動面を収束された高密度熱源により局
部的に急速加熱することにより焼入れ硬化する第１の工
程と、前記摺動面の非硬化部のみを選択的に除去する第
２の工程とからなり、硬化された凸部と非硬化の凹部と
を形成することを特徴としている。In order to achieve the above object, the present invention is characterized in that an uneven portion consisting of a hard convex portion and a hard concave portion is formed on at least a portion of the sliding surface of a member made of an iron-based alloy. In addition, in order to form such uneven portions, at least in a surface treatment method for a sliding material whose sliding surface is made of a metal alloy, the sliding surface of the sliding material is locally rapidly heated using a concentrated high-density heat source. It consists of a first step of quenching and hardening by heating, and a second step of selectively removing only the non-hardened portions of the sliding surface to form hardened convex portions and non-hardened concave portions. It is characterized by
また前記第１の工程を、硬化元素の拡散滲透を防止する
拡散防止膜を局部的に形成し、しかるのちに金属を硬化
することのできる硬化元素を前記拡散防止膜で被覆され
た部分以外の摺動材の摺動面に拡散滲透させて、硬化部
と非硬化部とを形成してもよい、また前記第１の工程を
、硬質物質の被覆を妨げる保護膜を局部的に形成し、し
かるのちに該保護膜で被覆された部分以外の摺動材の摺
動面に硬質物質を被覆して硬質被膜を形成してもよい。Alternatively, the first step may be performed by locally forming a diffusion prevention film that prevents diffusion and percolation of the hardening element, and then applying a hardening element capable of hardening the metal to areas other than the areas covered with the diffusion prevention film. A hardened portion and a non-hardened portion may be formed by diffusing and penetrating the sliding surface of the sliding material, and the first step may be performed by locally forming a protective film that prevents the hard material from being coated. Thereafter, a hard coating may be formed by coating the sliding surface of the sliding material other than the portion covered with the protective film with a hard substance.
さらにまた前記第１の工程を、摺動材の摺動面を収束さ
れた高密度熱源により局部的に加熱し、かつ該加熱部分
に金属硬化元素を含む気体を吹きつけるか、または前記
高密度熱源の周囲を金属硬化元素でシールドして、前記
加熱部分を局部的に加熱硬化してもよい。Furthermore, the first step may be carried out by heating the sliding surface of the sliding material locally with a focused high-density heat source and blowing a gas containing a metal hardening element onto the heated portion, or The heated portion may be locally heated and hardened by shielding the heat source with a metal hardening element.
鉄系合金は、０．２％以上の炭素を含有しておれば、マ
ルテンサイト変態により焼入れ硬化することができる。If the iron-based alloy contains 0.2% or more of carbon, it can be quenched and hardened by martensitic transformation.
高密度エネルギ熱源としてレーザビーム、電子ビーム、
ＴＩＧアーク、プラズマアークなどの中から適当なもの
を選び、前記鉄系合金表面を局部的に急速加熱すれば、
加熱部周囲への熱伝導現象により急速冷却が生じ、加熱
部分が焼入れ硬化する。このときの加熱部分への入熱量
は極めて少量であり、かつ短時間で加熱部分が冷却する
ため、加熱部表面の熱損傷や熱変形の発生を最小限に抑
えて焼入れ硬さを硬くすることができる。さらに熱源を
不連続に動かすか、入熱量を増減させることにより、焼
入れ硬化部分を断続状に形成することができる。Laser beam, electron beam, as a high-density energy heat source
If an appropriate one is selected from TIG arc, plasma arc, etc., and the surface of the iron-based alloy is locally rapidly heated,
Rapid cooling occurs due to the heat conduction phenomenon around the heated part, and the heated part is quenched and hardened. At this time, the amount of heat input to the heated part is extremely small, and the heated part is cooled down in a short period of time. Therefore, the occurrence of thermal damage and thermal deformation on the surface of the heated part can be minimized and the quenching hardness can be increased. Can be done. Furthermore, by discontinuously moving the heat source or increasing or decreasing the amount of heat input, the quench-hardened portion can be formed intermittently.
次に上記焼入れ硬化表面を例えばショツトブラスト処理
などにより、未硬化部すなわち軟質部分を選択的に削り
取って凹状とすることにより、凹凸表面が形成される。Next, an uneven surface is formed by selectively scraping off unhardened portions, that is, soft portions, of the hardened surface by, for example, shot blasting to form a concave shape.
特にショツトブラストで使用するショット（鉄粒子）の
硬さを、焼入れ硬化部分の硬さと未硬化部分の硬さの中
間の硬さとすることにより、ショットよりも軟かい部分
のみが選択的に削り取られる。従ってショツトブラスト
処理により焼入れ硬化部分は全く損傷を受けない。In particular, by setting the hardness of the shot (iron particles) used in shot blasting to be between the hardness of the quenched hardened part and the hardness of the unhardened part, only the parts that are softer than the shot are selectively removed. . Therefore, the hardened parts are not damaged at all by shot blasting.
さらに焼入れ硬化は高密度熱源による急熱急冷によって
行なわれるため、焼入れ硬化時の表面の損傷や変形の発
生も極めて僅かである。Furthermore, since quench hardening is performed by rapid heating and cooling using a high-density heat source, there is very little damage or deformation on the surface during quench hardening.
上記のように摺動材の摺動面に形成された硬い凸部が相
手摺動材に当接することにより、摺動面の摩耗を防止す
ることができる。また凹部に潤滑油などを保持させ、こ
の潤滑油を前記凸部に迅速かつ確実に補給することがで
きるので、凸部の摺動性能を著しく向上させることがで
きる。As described above, the hard convex portion formed on the sliding surface of the sliding material comes into contact with the mating sliding material, thereby making it possible to prevent wear of the sliding surface. Further, since lubricating oil or the like can be held in the concave portion and this lubricating oil can be quickly and reliably supplied to the convex portion, the sliding performance of the convex portion can be significantly improved.
また、前記摺動材の摺動面に硬化部と非硬化部を局部的
に形成する手段として、摺動面に拡散防止膜を局部的に
形成し、他の部分の表面に硬化元素を拡散滲透させる方
法、また摺動面に保護膜を局部的に形成し、他の部分の
表面に硬質被膜を形成する方法、さらにまた摺動面を局
部的に加熱するときに、加熱部分に金属硬化元素を含む
気体を吹きつけるか、熱源の周囲を金属硬化元素でシー
ルドして加熱する方法のいずれの方法によっても前記第
１の方法と同様な作用、効果を得ることができる。In addition, as a means of locally forming hardened parts and non-hardened parts on the sliding surface of the sliding material, a diffusion prevention film is locally formed on the sliding surface to diffuse the hardening element to the surface of other parts. There is also a method of forming a protective film locally on the sliding surface and forming a hard film on the surface of other parts.Furthermore, when heating the sliding surface locally, metal hardening is applied to the heated part. The same functions and effects as the first method can be obtained by either blowing a gas containing the element or heating the heat source by shielding the area around the heat source with a metal hardening element.
以下、本発明の実施例を図面を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図に本発明の第１の発明の一実施例による摺動材の
断面構造を示す。図において、１は摺動材、２は凹部、
３は凸部、４は硬化部であり、摺動材１の摺動面は０．
２％以上の炭素元素を含む鉄系合金からなっている。そ
してこの摺動材１の摺動面を凹凸状とし、凸部３が硬く
、凹部２が軟かい構造となっている。FIG. 1 shows a cross-sectional structure of a sliding material according to an embodiment of the first aspect of the present invention. In the figure, 1 is a sliding material, 2 is a recess,
3 is a convex portion, 4 is a hardened portion, and the sliding surface of the sliding material 1 is 0.
It is made of an iron-based alloy containing 2% or more of carbon element. The sliding surface of this sliding material 1 has an uneven structure, with the convex portions 3 being hard and the concave portions 2 being soft.
次に第２の発明の一実施例による表面処理方法を以下に
説明する。摺動材１の摺動面は鉄系合金からなっており
、かつ焼入れ硬化処理が可能な程度、例えば０．２％乃
至１．５％の炭素元素を含有している。この摺動材１の
摺動面をまず収束した高密度エネルギ熱源、例えば０．
５ｍ乃至１．０閣径に集光されたレーザビームにより局
部的かつ急速度に加熱する。この加熱部の温度がマルテ
ンサイト変態温度以上、例えば９００℃以上になると、
この加熱部分が周辺への熱伝導によって急速に冷却して
焼入れ硬化される。このときレーザビームの発熱量を増
減させるか、レーザビームを不連続に移動させることに
より、前記焼入れ硬化部分を断続状またはまだら状に形
成することができる。Next, a surface treatment method according to an embodiment of the second invention will be described below. The sliding surface of the sliding material 1 is made of an iron-based alloy, and contains carbon element to the extent that it can be hardened by quenching, for example, 0.2% to 1.5%. First, a high-density energy heat source focused on the sliding surface of the sliding material 1, for example 0.
Localized and rapid heating is performed using a laser beam focused to a diameter of 5 m to 1.0 m. When the temperature of this heating section exceeds the martensitic transformation temperature, for example 900°C or higher,
This heated portion is rapidly cooled and hardened by heat conduction to the surrounding area. At this time, by increasing or decreasing the amount of heat generated by the laser beam or by discontinuously moving the laser beam, the quench-hardened portion can be formed in an intermittent or spotty manner.
またレーザビームを蛇行状、ら旋状、うず巻状。The laser beam can also be shaped into a meandering, spiral, or spiral shape.
波形状などに移動させることにより、摺動線上で前記焼
入れ硬化部分が断続状となるように形成することもでき
る。また、レーザビームを揺動させて各加熱線の間隔が
レーザビーム径以上に離れていれば、前記の場合と同様
に摺動線上で硬化部分が断続状となる。また、レーザビ
ームを断続的に動かすか、格子状または網目状に動かし
て焼入れ硬化部を点状または格子状に形成することもで
きる。以上のいずれかの形状に摺動面を焼入れ硬化した
後、この摺動面をショツトブラスト処理して、非焼入れ
硬化部分のみを選択的に削り取って凹凸形状とする。こ
こでショツトブラスト処理に用いるショット、すなわち
鉄粒子の硬さを焼入れ硬化部の硬さと非焼入れ硬化部の
硬さの中間の硬さに選ぶことにより、非焼入れ部が選択
的に削られるため、焼入れ硬化部が凸部３となり、非焼
入れ硬化部が凹部２となる。すなわち本実施例によれば
、硬化した凸部３と非硬化の凹部２とが混在する摺動面
を形成することができる。By moving it in a wave shape or the like, the quench-hardened portion can be formed intermittently on the sliding line. Furthermore, if the laser beam is oscillated so that the distance between the heating lines is greater than the diameter of the laser beam, the hardened portion will be discontinuous on the sliding line as in the case described above. Furthermore, the hardened portions can be formed in dots or grids by moving the laser beam intermittently or in a grid or mesh pattern. After the sliding surface is quenched and hardened into any of the above shapes, this sliding surface is subjected to shot blasting to selectively shave off only the non-quenched and hardened portions to form an uneven shape. By selecting the hardness of the shot, or iron particles, used for shot blasting to be between the hardness of the quench-hardened part and the hardness of the non-quench-hardened part, the non-hardened part is selectively shaved. The quench-hardened portion becomes the convex portion 3, and the non-quench-hardened portion becomes the concave portion 2. That is, according to this embodiment, it is possible to form a sliding surface in which hardened convex portions 3 and unhardened concave portions 2 coexist.
上記の方法で形成された摺動面は、焼入れ硬化処理やシ
ョツトブラスト処理により、熱変形４表面の乱れ、寸法
精度不良などが生じる場合があるが、これらの変形は少
ないので、摺動面を研削加工などにより僅かに追加工す
ることにより容易に除去することができる。The sliding surface formed by the above method may undergo thermal deformation4 surface disturbance or poor dimensional accuracy due to quench hardening treatment or shot blasting treatment, but since these deformations are small, the sliding surface It can be easily removed by performing a slight additional process such as grinding.
第２図に上記実施例によって表面処理された摺動部材の
構造を示す。図において、５はすベリ軸、６はすべり軸
受、７はすベリ軸受６の表面に形成した表面硬化部であ
る。また第３図は第２図のＡ−Ａ線断面図、第４図は第
３図のＢ部詳細図である。すべり軸受部材を構成するす
ベリ軸５を概略の最終形状に機械加工した後、該すベリ
＊ｌ！１５の軸方向と平行に前述した方法によって多数
の焼入れ硬化された凸部８と軟質の凹部９とを形成する
。FIG. 2 shows the structure of a sliding member whose surface has been treated according to the above embodiment. In the figure, 5 is a sliding shaft, 6 is a sliding bearing, and 7 is a hardened surface portion formed on the surface of the sliding bearing 6. 3 is a sectional view taken along the line A--A in FIG. 2, and FIG. 4 is a detailed view of section B in FIG. 3. After machining the sliding shaft 5 constituting the sliding bearing member into the approximate final shape, the corresponding fitting *l! A large number of quench-hardened convex portions 8 and soft concave portions 9 are formed in parallel to the axial direction of 15 by the method described above.
この凸部８の上面はすベリ軸受６の内周面に当接してお
り、この凸部８の摺動性能を向上するための潤滑油また
は潤滑用物体、例えば鉛、亜鉛、黒鉛などの粉または固
体を、前記凸部８や速やかにかつ確実に供給するための
補強部として前記凹部９が適宜に分配配設されている。The upper surface of this convex portion 8 is in contact with the inner circumferential surface of the helical bearing 6, and lubricating oil or a lubricating substance, such as lead, zinc, graphite powder, etc., is used to improve the sliding performance of this convex portion 8. Alternatively, the concave portions 9 are appropriately distributed as reinforcing portions for supplying the solid to the convex portions 8 and quickly and reliably.
従って、すベリ軸５には摺動面として利用される凸部８
と、潤滑剤補給部として利用される凹部９とが形成され
ているので、荷重を支持する受圧面積、すなわち凸部８
の上面の面積は摺動面全体の面積より小さくなり、凸部
８が受ける面圧は高くなる。しかしながら、凹部９から
潤滑剤が速やかにかつ確実に供給されるため、凸部８の
摺動特性は著しく向上する。Therefore, the sliding shaft 5 has a convex portion 8 which is used as a sliding surface.
Since the concave portion 9 used as a lubricant supply portion is formed, the pressure receiving area that supports the load, that is, the convex portion 8 is formed.
The area of the upper surface becomes smaller than the area of the entire sliding surface, and the surface pressure that the convex portion 8 receives becomes higher. However, since the lubricant is quickly and reliably supplied from the recesses 9, the sliding characteristics of the protrusions 8 are significantly improved.
次に本実施例による摺動部材の摩耗試験を行なった結果
について説明する。この摩耗試験は、円筒リングと平板
とを潤滑油が入った容器内に浸漬した状態で１円筒リン
グの端面を平板に当接させてこの円筒リングに荷重と回
転を与えて摩擦させて行なった。この円筒リングは炭素
ｆｉ８４５Ｇを焼入れ後十分滑らかに仕上げたものであ
る。また平板は炭素鋼５４５Ｇを焼入れ後十分に滑らか
に仕上げたものと、前記実施例に示した表面処理方法で
仕上げたものとの２種類を用いた。本試験に用いた表面
処理方法は、１００Ａ乃至２００Ａの収束したプラズマ
アークで摺動面を３ｍ／ｌ１ｉｎ乃至７ｍ／ｗｉｎの高
速で移動し、加熱して焼入れ硬化したものである。この
加熱線を３−乃至６ＩＩＩｍピッチの間隔で繰返し加熱
焼入れすれば、摺動面には加熱ピッチの硬度分布が形成
できる。上記の加熱焼入れにより、加熱焼入れ部分の硬
さはＨＶ５００乃至９００、非加熱焼入れ部分がＨＶｌ
ｏｏ乃至３００となる。この硬さの差を利用して凹凸部
分を形成すればよい。具体的な凹凸部形成法としては、
粒径０．０５ｍｍφ乃至１ｍφ、硬さＨＶ３００乃至６
００程度の鋼球を圧力３ ｋｇ ｆ ／ａＪ乃至７ｋｇ
ｆ／ｃｄの空気流とともに１０分間吹きつけると、深さ
が５μ乃至１゜Ｏμ程度の凹凸部分が形成される。また
凸部と凹部の割合は０．２乃至０．７．凸部のピッチは
３ｍ乃至６瞭である。−方、従来の摺動面は平板を高周
波焼入れして、全面をほぼ均一にＨＶ６００乃至８００
に焼入れ硬化したのち、表面を研削加工して鏡面仕上げ
した。Next, the results of a wear test on the sliding member according to this example will be explained. This wear test was performed by placing the end face of one cylindrical ring in contact with the flat plate while the cylindrical ring and flat plate were immersed in a container containing lubricating oil, and applying a load and rotation to the cylindrical ring to cause friction. . This cylindrical ring is made of carbon fi845G which has been hardened and finished sufficiently smooth. Two types of flat plates were used: one made of carbon steel 545G and finished sufficiently smooth after quenching, and the other finished by the surface treatment method shown in the previous example. The surface treatment method used in this test was to move the sliding surface at a high speed of 3m/l1in to 7m/win with a converged plasma arc of 100A to 200A, and heat it to harden it by quenching. If this heating wire is repeatedly heated and hardened at intervals of 3- to 6IIIm pitches, a hardness distribution of heating pitches can be formed on the sliding surface. Due to the heat quenching described above, the hardness of the heat quenched part is HV500 to 900, and the hardness of the non-heat quenched part is HV1.
oo to 300. This difference in hardness may be used to form uneven portions. As a specific method for forming uneven parts,
Particle size 0.05mmφ to 1mφ, hardness HV300 to 6
00 steel ball at a pressure of 3 kg f /aJ to 7 kg
When blowing with an air flow of f/cd for 10 minutes, uneven portions with a depth of about 5μ to 1°Oμ are formed. The ratio of convex portions to concave portions is 0.2 to 0.7. The pitch of the convex portions is 3 m to 6 m. - On the other hand, the conventional sliding surface is made by induction hardening a flat plate, so that the entire surface is almost uniformly heated to HV600 to 800.
After being quenched and hardened, the surface was ground to a mirror finish.
上記の各試験片を用いて各種の荷重と摺動速度の摩擦条
件において摩擦試験を行なったところ、摩擦係数は従来
品が０６０２乃至ｏ、０５、本実施例により表面処理さ
れた平板が０．０４乃至０．０８と若干大きかったが、
摩耗量は従来品を１とすると本実施例では０．５乃至０
．０５と大幅に減少した。すなわち、同一摩擦条件にお
いては摩耗寿命は２倍乃至２０倍となることがわかった
。また、前記従来技術で示した特開昭６０−３４３１号
公報に記載された提案では、凹部のピッチは０．１乃至
０．２ｆｌ！ｌ、凸部の表面粗さは０．３μであるが、
これに対して本実施例では、摺動面の凹部のピッチは３
ｍ乃至６ｍ、凸部の表面粗さは３μ乃至５μであった。Friction tests were conducted using each of the above test pieces under various friction conditions of loads and sliding speeds, and the friction coefficient was 0.602 to 0.05 for the conventional product, and 0.05 for the flat plate surface-treated according to this example. Although it was slightly large at 04 to 0.08,
The amount of wear is 0.5 to 0 in this example, when the conventional product is 1.
．． 05, a significant decrease. In other words, it was found that the wear life is 2 to 20 times longer under the same friction conditions. Furthermore, in the proposal described in Japanese Patent Application Laid-Open No. 60-3431, which is referred to as the prior art, the pitch of the concave portions is 0.1 to 0.2 fl! l, the surface roughness of the convex portion is 0.3μ,
In contrast, in this embodiment, the pitch of the recesses on the sliding surface is 3.
m to 6 m, and the surface roughness of the convex portion was 3 μ to 5 μ.
すなわち、前記提案に比べて本実施例では摺動面の表面
粗さはかなり粗く、かつ凹部のピッチもかなり大きいの
で、表面処理コストも安くできる。That is, compared to the above proposal, in this embodiment, the surface roughness of the sliding surface is considerably rougher, and the pitch of the recesses is also considerably larger, so that the surface treatment cost can be reduced.
上記摩耗試験では高密度熱源としてプラズマアークを用
いたが、このプラズマアークは一般的な熱源、例えばＴ
ＩＧアークやガス炎などに比べると高密度熱源ではある
が、プラズマアーク発生の原理からアーク径を上述した
ようにｌｌｆｆ１ｌφ乃至５■φ程度よりも細く、例え
ば０．０５ｍｍφ乃至０．２■φ 程度にすることは困
難である。しかしながら高密度熱源としてレーザビーム
を用い十分に収束すれば、０．０２ｍ＋＋φ乃至０．５
ｎｍφ程度に熱源を絞ることができる。また電子ビーム
を用いれば熱源の分布をさらに細く絞ることも可能であ
る。これらの熱源を用いれば凹部ピッチを０．１ｍ乃至
０．５ｍ、凹部の溝幅または径を０．０５＋ｍ乃至０．
４ｍｍ程度とすることができ、前記特開昭６０−３４３
１号公報に記載された提案と同等の摺動面を得ることが
できる。In the above wear test, a plasma arc was used as a high-density heat source, but this plasma arc can be used as a general heat source such as T
Although it is a high-density heat source compared to an IG arc or a gas flame, the arc diameter is smaller than llff1lφ to 5■φ, for example, about 0.05mmφ to 0.2■φ, based on the principle of plasma arc generation. It is difficult to do so. However, if a laser beam is used as a high-density heat source and is sufficiently focused, the range will be 0.02m++φ to 0.5m.
The heat source can be narrowed down to about nmφ. Furthermore, by using an electron beam, it is possible to further narrow down the distribution of the heat source. If these heat sources are used, the recess pitch can be set from 0.1m to 0.5m, and the groove width or diameter of the recess can be set from 0.05+m to 0.5m.
The thickness can be approximately 4 mm, as disclosed in the above-mentioned Japanese Patent Application Laid-open No. 60-343.
A sliding surface equivalent to that proposed in Publication No. 1 can be obtained.
本実施例による摺動体の表面処理方法によると、硬化処
理前の表面形状及び表面粗さの変化を最小限にして、表
面を局部的に硬化して凹凸部を形成することができる。According to the surface treatment method for a sliding body according to this embodiment, it is possible to locally harden the surface and form uneven portions while minimizing changes in the surface shape and surface roughness before hardening treatment.
しかも再溶融チル化のための再溶融をしないでも、十分
焼入れ硬化を行なうことができる。従って硬化処理後の
後加工も少なくてすみ、処理が容易でコストを低減する
ことができるとともに、摺動部材の耐摩耗性を向上する
ことができる。特に潤滑油によって潤滑される摺動部材
においては、摩耗量を大幅に減少して寿命を伸ばし保守
を容易にすることができる。Furthermore, sufficient quenching and hardening can be achieved without remelting for remelting and chilling. Therefore, post-processing after the hardening treatment can be reduced, the treatment is easy, the cost can be reduced, and the wear resistance of the sliding member can be improved. Particularly in sliding members that are lubricated with lubricating oil, the amount of wear can be significantly reduced, extending the service life and making maintenance easier.
第５図に本発明の第３の発明による摺動体の表面処理方
法の一実施例により処理した摺動面の断面構造を示す。FIG. 5 shows a cross-sectional structure of a sliding surface treated by an embodiment of the sliding body surface treatment method according to the third aspect of the present invention.
金属製の摺動面を有する摺動部材１の摺動面の表面に、
硬化元素の拡散、滲透を防止する拡散防止膜１１を断続
的に形成する。この拡散防止膜１１は塗装、メツキまた
は穴あき金属薄板の巻回などの手段によって形成する。On the surface of the sliding surface of the sliding member 1 having a metal sliding surface,
A diffusion prevention film 11 is intermittently formed to prevent diffusion and penetration of the hardening element. The diffusion prevention film 11 is formed by painting, plating, or winding a perforated thin metal plate.
次にこの表面に硬化元素を拡散、浸透させて、拡散防止
１１１１．１が形成された部分以外の部分の表面を硬化
する。この表面硬化手段としては、低炭素鋼表面から炭
素元素を拡散、浸透させて焼入れ硬化する浸炭処理方法
、またはＴｉ合金表面から窒素元素を拡散、浸透させて
窒化化合物の形成することにより硬化する窒化処理方法
、または鉄鋼表面からホウ素元素を拡散、浸透させて硬
化するホウ化処理方法などがある。上記のようにして摺
動面に硬化部と非硬化部とを断続的に形成した後、拡散
防止膜１１とこの拡散防止膜１１で被覆されていた非硬
化部とを、例えばショツトブラスト処理などで選択的に
切削除去する。そして硬化部が凸部１０となり、非硬化
部が凹部となって摺動面に凹凸形状が形成される。Next, a hardening element is diffused and permeated into this surface to harden the surface other than the portion where the diffusion prevention layer 1111.1 is formed. This surface hardening method includes a carburizing treatment method in which carbon elements are diffused and infiltrated from the surface of low carbon steel to harden by quenching, or nitriding, which is hardened by diffusing and infiltrating nitrogen elements from the surface of a Ti alloy to form a nitride compound. There are two methods: a boriding method, which hardens the steel by diffusing and penetrating the boron element from the surface of the steel. After the hardened portions and non-hardened portions are intermittently formed on the sliding surface as described above, the diffusion prevention film 11 and the unhardened portions covered with this diffusion prevention film 11 are treated by, for example, shot blasting. Selectively cut and remove. The hardened portion becomes the convex portion 10, and the non-hardened portion becomes the concave portion, thereby forming an uneven shape on the sliding surface.
第６図に本発明の第４の発明の一実施例による表面処理
方法で処理した摺動材の断面構造を示す。FIG. 6 shows a cross-sectional structure of a sliding material treated by a surface treatment method according to an embodiment of the fourth aspect of the present invention.
金属製の摺動材１の表面に硬質皮膜１２が付着すること
を防止する保護膜１３を断続状、格子状または網目状に
形成した後、保護膜１３が付着していない摺動面に硬質
皮膜１２を被覆して、この硬質皮膜１２を断続状などに
形成する。次に保護膜１３を選択的に除去して、硬質皮
膜１２が凸部、硬質皮膜１２がない部分が凹部となる凹
凸状の摺動面を形成する。上記の硬質皮膜としては、硬
質クロムメツキ膜、セラミックなどの硬質金属の溶射皮
膜、無電解メツキ膜などが適用でき、保護膜としては、
塗料、プラスチック皮膜、無８！質皮膜などが適用でき
る。また、保護膜１３の除去を容易にし、硬質皮膜１２
と金属との密着強度を改善するために、高温熱処理や拡
散処理が有効な材料もある。また、保護膜１３とし７て
金網を用い、この金網を摺動面に巻回した後該摺動面に
セラミック、タングステン、モリブデン、超硬合金など
の微粒子を高温に加熱しながら吹きつけて、これらの硬
質皮膜を摺動面上に断続的に被覆した後、前記の金網を
取り除くことにより、硬質皮膜が凸部。After forming the protective film 13 in an intermittent, lattice, or mesh shape to prevent the hard coating 12 from adhering to the surface of the metal sliding material 1, a hard coating is applied to the sliding surface to which the protective film 13 is not attached. The hard coating 12 is coated with a coating 12, and the hard coating 12 is formed in a discontinuous manner. Next, the protective film 13 is selectively removed to form an uneven sliding surface in which the hard coating 12 forms convex portions and the portions where the hard coating 12 is not present form concave portions. As the above-mentioned hard coating, a hard chrome plating film, a thermally sprayed coating of hard metal such as ceramic, an electroless plating film, etc. can be applied, and as a protective film,
No paint, no plastic film, no 8! A quality membrane etc. can be applied. In addition, the protective film 13 can be easily removed, and the hard film 12 can be easily removed.
For some materials, high-temperature heat treatment or diffusion treatment is effective in improving the adhesion strength between the metal and the metal. Further, a wire mesh is used as the protective film 13 7, and after the wire mesh is wound around the sliding surface, fine particles of ceramic, tungsten, molybdenum, cemented carbide, etc. are sprayed onto the sliding surface while heating it to a high temperature. After coating these hard coatings intermittently on the sliding surface, the wire mesh is removed, and the hard coating forms convex portions.
硬質皮膜がない部分が凹部となる凹凸状の摺動面が形成
できる。It is possible to form an uneven sliding surface with concave portions where there is no hard coating.
第７図に本発明の第５の発明の一実施例による表面処理
方法で処理した摺動体の断面構造を示す。FIG. 7 shows a cross-sectional structure of a sliding body treated by a surface treatment method according to an embodiment of the fifth aspect of the present invention.
金属製の摺動面１４を有する摺動材１の摺動面１４をほ
ぼ最終的に機械加工した後、この摺動面１４を表面から
適宜の手段により局部的かつ断続状に表面硬化すると、
第７図に示すように摺動面１４上に硬化部１５と非硬化
部すなわち除去部１６とが混在して形成される。前記摺
動面１４の表面を硬化する手段は、この表面に硬化成分
を拡散滲透させることであり、この方法としてはレーザ
ガス浸炭法、レーザガス窒化法、プラズマガス浸炭法、
プラズマガス窒化法、イオンビーム打込み法などが適用
できる。例えば、プラズマガス浸炭法について説明する
。５０Ａ乃至１００Ａ程度でかつ細く絞られたプラズマ
アークにより、プラズマアークを高速で動かしなから摺
動面１４を局部的に急速加熱する。このときプラズマア
ーク中央に銅パイプで外部からメタン（ＣＨａ）ガスを
吹きつけると、メタンガスは超高速のプラズマアークに
より炭素イオンと水素イオンとに分解された後、活性化
された炭素イオンが摺動面１４から金属中に拡散、滲透
することにより加熱部分の炭素濃度が増加する。一方、
プラズマアークは高速で動かされているため、加熱部分
は急速冷却する。After almost final machining of the sliding surface 14 of the sliding material 1 having the metal sliding surface 14, this sliding surface 14 is locally and intermittently hardened from the surface by an appropriate means.
As shown in FIG. 7, a hardened portion 15 and a non-hardened portion, that is, a removed portion 16 are formed on the sliding surface 14 in a mixed manner. The means for hardening the surface of the sliding surface 14 is to diffuse and permeate the surface with a hardening component, and examples of this method include laser gas carburizing, laser gas nitriding, plasma gas carburizing,
Plasma gas nitriding method, ion beam implantation method, etc. can be applied. For example, a plasma gas carburizing method will be explained. The sliding surface 14 is heated locally and rapidly using a narrowly focused plasma arc of about 50A to 100A without moving the plasma arc at high speed. At this time, when methane (CHa) gas is blown into the center of the plasma arc from the outside through a copper pipe, the methane gas is decomposed into carbon ions and hydrogen ions by the ultra-high-speed plasma arc, and then the activated carbon ions slide. By diffusing and penetrating into the metal from the surface 14, the carbon concentration in the heated portion increases. on the other hand,
Because the plasma arc is moving at high speed, the heated part cools quickly.
このためプラズマアークで加熱された部分はマルテンサ
イト変態を生じて焼入れ硬化する。このプラズマガス浸
炭法によると、炭酸ガスを表面から拡散、浸透すると同
時に焼入れ硬化処理を実施することができる上に、処理
が短時間ですみ入熱量も少ないので、熱変形が少なく表
面形状もほとんど変化しない。Therefore, the portion heated by the plasma arc undergoes martensitic transformation and is quenched and hardened. According to this plasma gas carburizing method, carbon dioxide gas can be diffused and permeated from the surface and quench hardening treatment can be performed at the same time.The treatment is short and the amount of heat input is small, so there is little thermal deformation and the surface shape is almost the same. It does not change.
上記のように摺動面１４上に混在して形成された硬化部
１５と除去部１６とを、前述した各発明の実施例の場合
と同様にショツトブラスト処理することにより、凹凸状
の摺動面を得ることができる。By subjecting the hardened portions 15 and removed portions 16, which are mixedly formed on the sliding surface 14 as described above, to shot blasting in the same manner as in the embodiments of each of the inventions described above, uneven sliding can be achieved. You can get a face.
上記第３．第４及び第５の発明の実施例においても、前
記第２の発明の実施例の場合と同様に、硬い凸部が摺動
面となり、軟かい凹部潤滑剤の補給部となって、同様の
効果を得ることができる。3 above. In the embodiments of the fourth and fifth inventions, similarly to the embodiment of the second invention, the hard convex portions serve as sliding surfaces, and the soft concave portions serve as lubricant replenishment parts, so that similar effect can be obtained.
第８図に本発明に係る摺動材の他の実施例を示す。本実
施例による軸受部は軸５と軸受６とから構成されたラジ
アル軸受である。図において、円筒状の軸５の外周面に
はほぼ最終寸法に機械加工された後、前述した表面処理
方法のうちいずれかにより凹凸部が形成されている。そ
してこの凸部すなわち硬化部７は、軸５の軸方向に波形
状に形成されている。第９図は第８図に示す摺動材の摺
動面を展開して示したものである。FIG. 8 shows another embodiment of the sliding material according to the present invention. The bearing section according to this embodiment is a radial bearing composed of a shaft 5 and a bearing 6. In the figure, the outer circumferential surface of a cylindrical shaft 5 is machined to approximately the final dimensions, and then uneven portions are formed by one of the surface treatment methods described above. The convex portion, that is, the hardened portion 7 is formed in a wave shape in the axial direction of the shaft 5. FIG. 9 is an expanded view of the sliding surface of the sliding material shown in FIG. 8.
本実施例によると、軸５の表面に形成された波形状の硬
化部７は、軸５が矢印Ｃ方向に回転することにより隣接
する硬化部７間に形成された波形状の溝部に潤滑剤１７
を巻き込むとともに、−度巻き込んだ潤滑剤１７を軸方
向から漏れないようにとじ込める。従って軸５は確実に
潤滑剤１７を補給されながら回転するため、摺動性能が
向上する。According to the present embodiment, the wavy hardened portions 7 formed on the surface of the shaft 5 apply lubricant to the wavy grooves formed between adjacent hardened portions 7 when the shaft 5 rotates in the direction of arrow C. 17
At the same time, the lubricant 17 that has been drawn in by - degree can be contained so as not to leak from the axial direction. Therefore, since the shaft 5 rotates while being reliably supplied with the lubricant 17, the sliding performance is improved.
なお前記表面処理方法の各実施例において、摺動面を局
部的に硬化した後非硬化部分のみを選択的に除去する手
段として、ショツトブラスト処理法を用いた場合につい
て説明したが、この手段はショツトブラスト処理法に限
定されるものではない。例えば、適当な比重に調整した
液体中に砥粒または金属粉を浮遊状態にした切削液を摺
動面に吹き付けて、軟かい部分を選択的に切削してもよ
い。または前記の切削液を容器に入れてこの切削液中に
被処理材を浸漬して旋回させるか、または被処理材を固
定して切削液を旋回させて切削を行なってもよい。ある
いは、砥粒または金属粉を気体または液体とともに吹き
つけて切削を行なってもよい。これらいずれの方法によ
っても、非硬化部分は硬化部分よりも削られやすいので
、最終的には非硬化部分が凹、硬化部分が凸の凹凸形状
を形成することができる。In each of the embodiments of the surface treatment method described above, a case was described in which shot blasting was used as a means for selectively removing only the unhardened portion after locally hardening the sliding surface. The method is not limited to shot blasting. For example, soft parts may be selectively cut by spraying a cutting fluid containing abrasive grains or metal powder suspended in a liquid whose specific gravity has been adjusted to an appropriate density onto the sliding surface. Alternatively, cutting may be performed by placing the cutting fluid in a container and immersing the material to be processed in the cutting fluid and swirling the material, or by fixing the material to be processed and swirling the cutting fluid. Alternatively, cutting may be performed by spraying abrasive grains or metal powder together with gas or liquid. In any of these methods, since the unhardened portion is more easily scraped than the hardened portion, it is possible to finally form an uneven shape in which the unhardened portion is concave and the hardened portion is convex.
以上、詳細に説明したように、本発明に係る摺動材によ
れば、摺動材の摺動面の少なくとも一部に硬質の凸部と
軟質の凹部とからなる凹凸部を形成したので、摺動材の
耐摩耗性を向上することができる。特に潤滑材によって
潤滑される摩擦条件下では摩耗量が大幅に減少し、該摺
動材を用いた機械の寿命を伸ばし、保守を容易にする効
果がある。また本発明に係る摺動材の表面処理方法によ
れば、簡単で安価な表面処理装置により、表面処理に伴
なって発生する変形を最小限に抑え、後加工も殆んど必
要なく、容易でかつ安い処理費用で摺動体の表面処理を
行なうことができる。As described above in detail, according to the sliding material according to the present invention, since the uneven portion consisting of the hard convex portion and the soft concave portion is formed on at least a portion of the sliding surface of the sliding material, The wear resistance of the sliding material can be improved. Particularly under frictional conditions where the sliding material is lubricated, the amount of wear is significantly reduced, which has the effect of extending the life of machines using the sliding material and facilitating maintenance. In addition, according to the surface treatment method for sliding materials according to the present invention, deformation caused by surface treatment can be minimized using a simple and inexpensive surface treatment device, and post-processing is hardly required and can be easily performed. The surface of the sliding body can be treated at a high cost and at a low processing cost.
第１図は本発明の第２の発明に係る摺動体の表面の処理
方法の一実施例によって形成された、第１の発明の一実
施例による摺動体の摺動面を示す横断面図、第２図は本
実施例による摺動体を用いた軸受を示す構造図５第３図
は第２図のＡ−Ａ線断面図、第４図は第３図のＢ部拡大
詳細図、第５図、第６図及び第７図はそれぞれ本発明に
係る摺動体の表面処理方法の第２．第３及び第４の発明
の一実施例を説明するための摺動面の横断面図、第８図
は本発明に係る摺動体の他の実施例を用いた軸受を示す
構造図、第９図は第８図の摺動体の摺動面を示す展開図
である。
１・・・摺動材、２，９・・・凹部、３，８・・・凸部
、４゜７．１０．１５・・・硬化部、５・・・すべり軸
、６・・・すべり軸受、１１・・・拡散防止膜、１２・
・・硬質皮膜。
１３・・・保護膜、１４・・・摺動面、１６・・・除去
部（非硬化部）、１７・・・潤滑剤。
犯
の
５−・軸
卑４図
為
葛
７−−−石慄しス乙９ＰFIG. 1 is a cross-sectional view showing a sliding surface of a sliding body according to an embodiment of the first invention, which is formed by an embodiment of the method for treating the surface of a sliding body according to the second invention; Fig. 2 is a structural diagram showing a bearing using a sliding body according to this embodiment. Fig. 3 is a sectional view taken along line A-A in Fig. 2, Fig. 4 is an enlarged detailed view of section B in Fig. 3, and Fig. 6 and 7 respectively show the second example of the surface treatment method for a sliding body according to the present invention. FIG. 8 is a cross-sectional view of a sliding surface for explaining one embodiment of the third and fourth inventions; FIG. 8 is a structural diagram showing a bearing using another embodiment of the sliding body according to the present invention; FIG. The figure is a developed view showing the sliding surface of the sliding body in FIG. 8. 1... Sliding material, 2, 9... Concave portion, 3, 8... Convex portion, 4゜7.10.15... Hardened portion, 5... Sliding shaft, 6... Sliding Bearing, 11... Diffusion prevention film, 12.
・Hard film. DESCRIPTION OF SYMBOLS 13... Protective film, 14... Sliding surface, 16... Removed part (unhardened part), 17... Lubricant. Criminal 5--Chikubei 4 Zumekatsu 7--Ishiki Suotsu 9P
Claims (1)
、硬質の凸部と軟質の凹部とを形成し、前記凸部が水玉
状、格子状、網目状、うず巻状または断続状の形状であ
ることを特徴とする摺動材。 ２、凹部に摺動性能を向上させる液体、粉体または固体
を保持し、凸部は摺動面であることを特徴とする請求項
１記載の摺動材。 ３、凸部を摺動線上に断継的な形状で配列したことを特
徴とする請求項１又は２記載の摺動材。 ４、円筒部材の摺動面に、凸部を前記円筒部材の軸方向
に蛇行状に形成したことを特徴とする請求項１、２又は
３記載の摺動材。 ５、請求項１記載の摺動材の表面処理方法において、摺
動面を収束された高密度熱源により局部的に急速加熱し
焼入れ硬化する第１の工程と、前記摺動面の非硬化部の
みを選択的に除去する第１の工程とからなり、前記摺動
面に硬化された凸部と非硬化の凹部とを形成することを
特徴とする表面処理方法。 ６、請求項１記載の摺動材の表面処理方法において、摺
動面を硬化する第１の工程と、該第１の工程による硬化
を防止する第２の工程と、該第２の工程と前記第１の工
程とを用いて前記摺動面に硬化部と非硬化部とを形成し
たのち、前記非硬化部を選択的に除去する第３の工程と
からなり、凸部の硬化部と凹部の非硬化部とを形成する
ことを特徴とする表面処理方法。 ７、請求項１記載の摺動材の表面処理方法において、摺
動面に硬質物質を被覆させる第１の工程と、該第１の工
程による前記硬質物質の被覆を妨げる第２の工程とを用
いて前記摺動面に硬質皮膜部とを不均一に形成し、該硬
質皮膜部を凸部とするとともに非皮膜部を凹部とするこ
とを特徴とする表面処理方法。[Scope of Claims] 1. A hard convex part and a soft concave part are formed on at least one sliding surface of a member made of an iron-based alloy, and the convex part has a polka dot shape, a lattice shape, a mesh shape, or a swirl shape. A sliding material characterized by having a coiled or interrupted shape. 2. The sliding material according to claim 1, wherein the concave portion holds a liquid, powder, or solid that improves sliding performance, and the convex portion is a sliding surface. 3. The sliding material according to claim 1 or 2, characterized in that the convex portions are arranged in an interrupted shape on the sliding line. 4. The sliding member according to claim 1, 2 or 3, wherein the sliding surface of the cylindrical member has a convex portion formed in a meandering shape in the axial direction of the cylindrical member. 5. The method for surface treatment of a sliding material according to claim 1, comprising: a first step of locally rapidly heating the sliding surface to harden it by quenching with a focused high-density heat source; and a non-hardened portion of the sliding surface. A surface treatment method comprising a first step of selectively removing only the sliding surface, and forming hardened convex portions and unhardened concave portions on the sliding surface. 6. The method for surface treatment of a sliding material according to claim 1, comprising: a first step of hardening the sliding surface; a second step of preventing hardening caused by the first step; and a second step of curing the sliding surface. a third step of forming a hardened portion and a non-hardened portion on the sliding surface using the first step, and then selectively removing the non-hardened portion; A surface treatment method characterized by forming a recessed portion and a non-hardened portion. 7. The method for surface treatment of sliding materials according to claim 1, comprising: a first step of coating the sliding surface with a hard substance; and a second step of preventing the coating of the hard substance by the first step. A surface treatment method characterized in that a hard coating is formed non-uniformly on the sliding surface using the above-described method, and the hard coating is made into a convex portion and the non-coated portion is made into a concave portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32585988A JPH02173212A (en) | 1988-12-26 | 1988-12-26 | Sliding material and surface treatment method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32585988A JPH02173212A (en) | 1988-12-26 | 1988-12-26 | Sliding material and surface treatment method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02173212A true JPH02173212A (en) | 1990-07-04 |
Family
ID=18181416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32585988A Pending JPH02173212A (en) | 1988-12-26 | 1988-12-26 | Sliding material and surface treatment method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02173212A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006027949A1 (en) * | 2004-09-03 | 2006-03-16 | Taiho Kogyo Co., Ltd. | Hemispherical shoe and method of manufacturing the same |
| WO2006027948A1 (en) * | 2004-09-03 | 2006-03-16 | Taiho Kogyo Co., Ltd. | Sliding surface of sliding member |
| WO2006075520A1 (en) * | 2005-01-17 | 2006-07-20 | Taiho Kogyo Co., Ltd. | Method of manufacturing sliding member |
| JP2007092707A (en) * | 2005-09-30 | 2007-04-12 | Kawasaki Precision Machinery Ltd | Swash plate type piston pump and motor |
| EP1835175A1 (en) * | 2004-12-28 | 2007-09-19 | Taiho Kogyo Co., Ltd. | Shoe |
| US7892656B2 (en) * | 2004-11-11 | 2011-02-22 | Taiho Kogyo Co., Ltd. | Sliding device |
| CN102046962A (en) * | 2008-05-30 | 2011-05-04 | 罗伯特·博世有限公司 | Free-ejecting starter |
| WO2012014522A1 (en) * | 2010-07-27 | 2012-02-02 | 大豊工業株式会社 | Sliding member and method for producing same |
| US8118567B2 (en) | 2006-12-15 | 2012-02-21 | Kabushiki Kaisha Kawasaki Precision Machinery | Swash plate type piston pump motor |
| CN103182683A (en) * | 2011-12-30 | 2013-07-03 | 深圳富泰宏精密工业有限公司 | Method for manufacturing pattern on metal housing, and manufactured metal housing |
| JP2016117935A (en) * | 2014-12-22 | 2016-06-30 | 株式会社不二製作所 | Surface treatment method for sliding member, and sliding member |
-
1988
- 1988-12-26 JP JP32585988A patent/JPH02173212A/en active Pending
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7713610B2 (en) | 2004-09-03 | 2010-05-11 | Taiho Kogyo Co., Ltd. | Sliding member |
| WO2006027948A1 (en) * | 2004-09-03 | 2006-03-16 | Taiho Kogyo Co., Ltd. | Sliding surface of sliding member |
| WO2006027949A1 (en) * | 2004-09-03 | 2006-03-16 | Taiho Kogyo Co., Ltd. | Hemispherical shoe and method of manufacturing the same |
| KR100838191B1 (en) * | 2004-09-03 | 2008-06-16 | 다이호 고교 가부시키가이샤 | Hemispherical shoe and method of manufacturing the same |
| KR100858098B1 (en) * | 2004-09-03 | 2008-09-10 | 다이호 고교 가부시키가이샤 | Sliding member |
| US7651273B2 (en) | 2004-09-03 | 2010-01-26 | Taiho Kogyo Co., Ltd. | Semispherical shoe and manufacturing method therefor |
| US7892656B2 (en) * | 2004-11-11 | 2011-02-22 | Taiho Kogyo Co., Ltd. | Sliding device |
| EP1835175A1 (en) * | 2004-12-28 | 2007-09-19 | Taiho Kogyo Co., Ltd. | Shoe |
| EP1835175A4 (en) * | 2004-12-28 | 2010-04-21 | Taiho Kogyo Co Ltd | Shoe |
| WO2006075520A1 (en) * | 2005-01-17 | 2006-07-20 | Taiho Kogyo Co., Ltd. | Method of manufacturing sliding member |
| US7704337B2 (en) | 2005-01-17 | 2010-04-27 | Taiho Kogyo Co., Ltd. | Method for making a slide member |
| JP2007092707A (en) * | 2005-09-30 | 2007-04-12 | Kawasaki Precision Machinery Ltd | Swash plate type piston pump and motor |
| US8118567B2 (en) | 2006-12-15 | 2012-02-21 | Kabushiki Kaisha Kawasaki Precision Machinery | Swash plate type piston pump motor |
| CN102046962A (en) * | 2008-05-30 | 2011-05-04 | 罗伯特·博世有限公司 | Free-ejecting starter |
| JP2011522148A (en) * | 2008-05-30 | 2011-07-28 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Overhang type starter |
| WO2012014522A1 (en) * | 2010-07-27 | 2012-02-02 | 大豊工業株式会社 | Sliding member and method for producing same |
| JP2012026538A (en) * | 2010-07-27 | 2012-02-09 | Taiho Kogyo Co Ltd | Sliding member, and method for producing same |
| US8770842B2 (en) | 2010-07-27 | 2014-07-08 | Taiho Kogyo Co., Ltd. | Sliding member and manufacturing method thereof |
| CN103182683B (en) * | 2011-12-30 | 2017-03-08 | 广州江瑞机电设备有限公司 | The method of pattern-making and metal shell obtained by this method on metal shell |
| CN103182683A (en) * | 2011-12-30 | 2013-07-03 | 深圳富泰宏精密工业有限公司 | Method for manufacturing pattern on metal housing, and manufactured metal housing |
| US20130171473A1 (en) * | 2011-12-30 | 2013-07-04 | Fih (Hong Kong) Limited | Method for making patterns on metal article and the resulting metal article |
| JP2016117935A (en) * | 2014-12-22 | 2016-06-30 | 株式会社不二製作所 | Surface treatment method for sliding member, and sliding member |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2550621C (en) | Method for carburizing steel components | |
| JPH02173212A (en) | Sliding material and surface treatment method thereof | |
| CN105177274A (en) | Laser hardening process | |
| EP2628808A1 (en) | Localized hardening of metallic surfaces | |
| CN106086344A (en) | A kind of metal material roller type method for making Nano surface | |
| Rastkar et al. | Surface modification and wear test of carbon steel by plasma electrolytic nitrocarburizing | |
| JPH02285024A (en) | Manufacturing roller bearing member from solid-hardened roller bearing steel | |
| JP2926240B2 (en) | Sliding material and surface treatment method | |
| Khusainov et al. | Local ion nitriding of martensitic structural steel in plasma of glow discharge with hollow cathode | |
| Doyon et al. | Induction hardening of crankshafts and camshafts | |
| US9915335B2 (en) | Method for treating a component such as a gearwheel | |
| US20160002747A1 (en) | Process for treating steel alloys for gears | |
| US11231079B2 (en) | Ferrous workpiece and method of manufacture | |
| JP2001279421A (en) | Method for producing sliding member | |
| Sui et al. | Hardness Difference Effect of Biomimetic Surface with Hard-Soft Structure on Oil-Lubrication Wear Resistance | |
| JPH0313585A (en) | Method for surface-hardening metal and method for surface-hardening nonmagnetic bearing parts | |
| JPH0310686B2 (en) | ||
| WO2021002179A1 (en) | Raceway ring for rolling bearing | |
| RU2068505C1 (en) | Method of manufacturing slide bearing | |
| Rudnev | Recent inventions and innovations in induction hardening of gears and gear-like components | |
| GB2160227A (en) | Heat treatment process | |
| Ricciardi et al. | Surface Treatments Of Automobile Parts By RTM | |
| Kapustynskyi et al. | Effects of laser cladding and treatment methods on wear resistance in heavy-loaded units | |
| Aggoune et al. | Optimization and control of gaseous nitriding of a 33CrMoV12-9 steel | |
| Kovalenko et al. | The role of dimensional factors and absorption efficiency in laser surface hardening |